Quote:
Originally Posted by nickerman
I would like to get more high tones for better listening. I don't mean for music but for hearing people talk.
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But it wouldn't do any good to manipulate normal frequencies as
"toll quality" (standard telephone service) is not delivering high tones.
Wideband audio, also known as HD voice, is high definition voice quality for telephony audio, contrasted with standard digital telephony "toll quality". It extends the frequency range of audio signals transmitted over telephone lines, resulting in higher quality speech.
The range of the normal human voice extends from
80 Hz to 14 kHz but traditional, voiceband or narrowband telephone calls limit audio frequencies to the range of
300 Hz to 3.4 kHz. Wideband audio relaxes the bandwidth limitation and transmits in the audio frequency range of
50 Hz to 7 kHz or higher.
If you are unfamiliar with frequencies, then Hertz replaced "cycles per second" as a standard of measurement. They are interchangeable. A standard piano tuning of 88 keys is
32.7 Hz to 4.186 kHz. So
HD Voice can produce tones above the top key on a piano.
But you are not going to be able to hear any average person calling you with HD Voice, as you both have to have the service and the phones necessary to handle HD audio.
The other acronym that is useful is VoLTE for
Voice
over
Long-
Term
Evolution, which refers to the way your cell company delivers HD audio.
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